Air filter frame



FIG. 1 is a first perspective view of an air filter frame showing my newdesign;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a perspective view of the air filter frame shown in an openstate;

FIG. 10 is an enlarged view of the selected portion 10 in FIG. 1 ; and,

FIG. 11 is an enlarged view of the selected portion 11 in FIG. 2 .

The broken lines shown in the drawings depict portions of the air filterframe that form no part of the claimed design. The dash-dot-dash brokenlines denote the boundaries of the areas of detail and form no part ofthe claimed design.

CLAIM The ornamental design for an air filter frame, as shown anddescribed.